CN103406683A - Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas - Google Patents
Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas Download PDFInfo
- Publication number
- CN103406683A CN103406683A CN2013103651870A CN201310365187A CN103406683A CN 103406683 A CN103406683 A CN 103406683A CN 2013103651870 A CN2013103651870 A CN 2013103651870A CN 201310365187 A CN201310365187 A CN 201310365187A CN 103406683 A CN103406683 A CN 103406683A
- Authority
- CN
- China
- Prior art keywords
- electrode
- welding
- cylindrical cavity
- spot
- welding tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Resistance Welding (AREA)
Abstract
The invention discloses a spot-welding electrode capable of completing aluminium alloy welding with the assistance of gas, belonging to the technical field of spot welding. The spot-welding electrode comprises an electrode body and a gas tube, wherein the electrode body is composed of an electrode disc pedestal and an electrode working terminal; a cylindrical cavity is formed in the electrode working terminal; the gas tube is arranged in the electrode disc pedestal and enters the cylindrical cavity after passing through the electrode disc pedestal; one end, far away from the electrode disc pedestal, of the electrode working terminal is provided with a transition slope; the two ends of the transition slope are connected with the side surface of the cylindrical cavity and the outer side surface of the electrode working terminal respectively. When the spot-welding electrode is in use, the possibility of local little explosion caused by nonuniform point contact of the electrode in spot welding can be lowered, and thus the welding quality is guaranteed. By virtue of the cylindrical cavity, the heat transfer path is perfected, and the deviation of a nugget is effectively avoided. By virtue of the gas tube, an effect of cleaning residuals can be achieved, and the smoothness of the front end of the electrode can be guaranteed.
Description
Technical field
The invention belongs to the spot-welding technology field, specifically, relate to a kind of spot-wedling electrode, more particularly, relate to a kind of spot-wedling electrode that completes Welded by gas.
Background technology
The resistance spot welding of aluminium alloy is most important welding technique in the body of a motor car automated production, but the subject matter existed in aluminium alloy resistance spot welding is exactly the too fast scaling loss of electrode, causes the frequent replacing of electrode.Affect production efficiency.By the research to aluminium alloy pinpoint welding electrode erosion failure mechanism, find, during spot welding, electrode contacts with inhomogeneous point between the Al alloy parts contact-making surface and causes energising local little blast of moment and make the electrode end surface regional area produce plastic deformation, the plastic deformation of this part has aggravated again conversely electrode and has contacted with the inhomogeneous point between the workpiece contact-making surface, the little blast in part and Cu-Al alloying reciprocation by inhomogeneous some contact causes, accelerate electrode failure speed.Aluminum alloy welding is connected to a lot of Method and process, but well-known, the resistance spot welding of aluminium alloy is most important processing method in the body of a motor car automated production, but, because aluminium alloy has extraordinary conduction, heat conductivility, its surface often has again the oxide-film of one deck densification, its melting temperature is more than 3 times of aluminium alloy melting temperature, this has brought great difficulty with regard to the resistance spot welding of giving aluminum alloy materials, with ordinary carbon steel spot welding, compare, aluminium alloy pinpoint welding not only needs to adopt larger welding current, and the welding shunt influence is larger, electrode erosion is serious, electrode diameter changes greatly, spot welding for general mild steel, can reach several thousand points electrode life, and the spot welding of aluminium alloy generally only can reach tens points, welding quality is difficult to control, can not meet the requirement that serialization is produced far away, thereby had a strong impact on the application of aluminium alloy in auto industry, therefore, how to improve electrode life and welding quality, just the very corn of a subject and key have been become, the basic principle of aluminium alloy pinpoint welding electrode life-prolonging technique research, to alleviate exactly the Cu-Al alloying between electrode and Al alloy parts contact-making surface and reduce inhomogeneous point and contact the little blast in the part of causing, and this problem never has effective solution now, also someone attempts adopting the method that adds coating in the electrode bottom, high cost not only, and effect is undesirable.
Summary of the invention
The problem that 1, will solve
For in prior art during spot welding electrode with inhomogeneous point between the Al alloy parts contact-making surface, contact and cause energising local little blast of moment and make the electrode end surface regional area produce plastic deformation, the plastic deformation of this part has aggravated again conversely electrode and has contacted with the inhomogeneous point between the workpiece contact-making surface, by inhomogeneous point, contacted the little blast in part and the Cu-Al alloying reciprocation caused, the problem that electrode failure speed is accelerated, the invention provides a kind of spot-wedling electrode that completes Welded by gas.
2, technical scheme
In order to reach purpose of the present invention, the present invention adopts following technical scheme:
A kind of spot-wedling electrode that completes Welded by gas, comprise electrode body, also comprises tracheae, and described electrode body is comprised of electrode discs base and welding tip; Described electrode discs base and welding tip are all cylindrical; There is cylindrical cavity described welding tip inside; Described tracheae is arranged in the electrode discs base, passes into cylindrical cavity after passing the electrode discs base; The external diameter of described electrode discs base is greater than the external diameter of welding tip; Described welding tip also comprises the transition inclined-plane away from an end of electrode discs base; The two ends on described transition inclined-plane are connected with the side of cylindrical cavity and the lateral surface of welding tip respectively; The side of described cylindrical cavity is parallel with the lateral surface of welding tip; The angle of the side of described transition inclined-plane and cylindrical cavity is 30-60 °.
Preferably, the angle of the side of described transition inclined-plane and cylindrical cavity is 41 °.
3, beneficial effect
Than prior art, beneficial effect of the present invention is:
(1) the present invention also comprises tracheae, during spot welding, to cylindrical cavity, spray into inert gas by tracheae, now indifferent gas cognition outwards sprays in cylindrical cavity, along welding tip and the ejection of workpiece contact position, reach the effect of cleaning residue, keep front end smooth of electrode;
(2) electrode body of the present invention is comprised of electrode discs base and welding tip, electrode discs base and welding tip are all cylindrical, there is cylindrical cavity welding tip inside, welding tip also comprises the transition inclined-plane away from an end of electrode discs base, the two ends on transition inclined-plane are connected with the side of cylindrical cavity and the lateral surface of welding tip respectively, the side of cylindrical cavity is parallel with the lateral surface of welding tip, the angle of the side of transition inclined-plane and cylindrical cavity is 30-60 °, this design makes the present invention in the process of work, guarantee that the contact-making surface of electrode and workpiece is less, contact-making surface becomes annular, in case local little blast occurs and makes the electrode end surface regional area produce plastic deformation in a place, drive the near zone of changing the time plastic deformation also occurs, enlarge rapidly the plastic deformation zone, can avoid this electrode the little blast in part that inhomogeneous some contact causes when carrying out spot welding next time, again to occur, guarantee welding quality, cylindrical cavity simultaneously, improved the transfer route of heat, effectively avoided the nugget skew,
(3) to be 41 ° be preferred plan to the angle of the side of transition of the present invention inclined-plane and cylindrical cavity, can guarantee that the expansion in plastic deformation zone is moderate, is unlikely to again to cause the sharply shortening of electrode life;
(4) the present invention is simple in structure, cost is low, easy to use.
The accompanying drawing explanation
Fig. 1 is cutaway view of the present invention;
Fig. 2 is top view of the present invention.
In figure: 1, tracheae; 2, electrode discs base; 3, welding tip; 31, transition inclined-plane; 32, cylindrical cavity.
The specific embodiment
Below in conjunction with specific embodiment, the present invention further is described.
As shown in Figure 1 and Figure 2, a kind of spot-wedling electrode that completes Welded by gas, comprise electrode body, also comprises tracheae 1, and electrode body is comprised of electrode discs base 2 and welding tip 3; Electrode discs base 2 and welding tip 3 are all cylindrical; There is cylindrical cavity 32 welding tip 3 inside; Tracheae 1 is arranged in electrode discs base 2, passes into cylindrical cavity 32 after passing electrode discs base 2; The external diameter of electrode discs base 2 is greater than the external diameter of welding tip 3; Welding tip 3 also comprises transition inclined-plane 31 away from an end of electrode discs base 2; 31De two ends, transition inclined-plane are connected with the lateral surface of welding tip 3 with the side of cylindrical cavity 32 respectively; The side of cylindrical cavity 32 is parallel with the lateral surface of welding tip 3, and transition inclined-plane 31 is 41 ° with the angle of the side of cylindrical cavity 32.
The external diameter of electrode discs base 2 is 15mm, the diameter of welding tip 3 is 6mm, the diameter of cylindrical cavity 32 is 4.0mm, material is copper, during work, electrode discs base 2 is stuck on mash welder, during spot welding, to cylindrical cavity 32, spray into argon gas by tracheae 1, now argon gas can be from the interior outside ejection of cylindrical cavity 32, along welding tip 3 and the ejection of workpiece contact position, reach the effect of cleaning residue, the spot welding life-span reaches 267 times, and due to the design of intermediate cylindrical cavity 32, thermal diffusion is even simultaneously, welding quality is good, and nugget is without skew.
With embodiment 1, difference is that transition inclined-plane 31 is 30 with the angle of the side of cylindrical cavity 32, and the spot welding life-span reaches 245 times, and welding quality is good, and nugget is without skew.
With embodiment 1, difference is that transition inclined-plane 31 is 60 ° with the angle of the side of cylindrical cavity 32, and the spot welding life-span reaches 262 times, and welding quality is good, and nugget is without skew.
Claims (2)
1. a spot-wedling electrode that completes Welded by gas, comprise electrode body, it is characterized in that: also comprise tracheae (1), described electrode body is comprised of electrode discs base (2) and welding tip (3); Described electrode discs base (2) and welding tip (3) are all cylindrical; There is cylindrical cavity (32) described welding tip (3) inside; Described tracheae (1) is arranged in electrode discs base (2), passes into cylindrical cavity (32) after passing electrode discs base (2); The external diameter of described electrode discs base (2) is greater than the external diameter of welding tip (3); Described welding tip (3) also comprises transition inclined-plane (31) away from an end of electrode discs base (2); The two ends on described transition inclined-plane (31) are connected with the lateral surface of welding tip (3) with the side of cylindrical cavity (32) respectively; The side of described cylindrical cavity (32) is parallel with the lateral surface of welding tip (3); Described transition inclined-plane (31) is 30-60 ° with the angle of the side of cylindrical cavity (32).
2. a kind of spot-wedling electrode that completes Welded by gas according to claim 1 is characterized in that: described transition inclined-plane (31) is 41 ° with the angle of the side of cylindrical cavity (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103651870A CN103406683A (en) | 2013-08-21 | 2013-08-21 | Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103651870A CN103406683A (en) | 2013-08-21 | 2013-08-21 | Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103406683A true CN103406683A (en) | 2013-11-27 |
Family
ID=49599749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103651870A Pending CN103406683A (en) | 2013-08-21 | 2013-08-21 | Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103406683A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472620A (en) * | 1983-04-01 | 1984-09-18 | General Electric Company | Instrumented spot welding electrode |
| KR20090066662A (en) * | 2007-12-20 | 2009-06-24 | 전정상 | Welding electrode |
| JP2010131666A (en) * | 2008-12-08 | 2010-06-17 | Kanto Auto Works Ltd | Electrode for spot welding |
| CN202555960U (en) * | 2012-04-01 | 2012-11-28 | 沈阳捷众汽车零部件有限公司 | Jet-propelled projection welding electrode device |
| CN203509370U (en) * | 2013-08-21 | 2014-04-02 | 芜湖奕辰模具科技有限公司 | Spot-welding electrode welding aluminum alloy with assistance of gas |
-
2013
- 2013-08-21 CN CN2013103651870A patent/CN103406683A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472620A (en) * | 1983-04-01 | 1984-09-18 | General Electric Company | Instrumented spot welding electrode |
| KR20090066662A (en) * | 2007-12-20 | 2009-06-24 | 전정상 | Welding electrode |
| JP2010131666A (en) * | 2008-12-08 | 2010-06-17 | Kanto Auto Works Ltd | Electrode for spot welding |
| CN202555960U (en) * | 2012-04-01 | 2012-11-28 | 沈阳捷众汽车零部件有限公司 | Jet-propelled projection welding electrode device |
| CN203509370U (en) * | 2013-08-21 | 2014-04-02 | 芜湖奕辰模具科技有限公司 | Spot-welding electrode welding aluminum alloy with assistance of gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7256863B2 (en) | resistance spot welding electrode cap | |
| CN104625411B (en) | A kind of Ti2The method of AlNb base intermetallic compound and xenogenesis titanium alloy welding | |
| CN103753029B (en) | Electric arc metallic stud welding method under a kind of frictional cleaning homogenizing and device | |
| CN101143402A (en) | Screw plunger welding composite connecting method for adhesive joint repair | |
| CN101590572A (en) | The vertical double-sided double-arc plasma symmetry welding method | |
| CN103433630A (en) | Laser-electric arc composite spot welding method for pulsed wire feeding | |
| CN104907682B (en) | A kind of irregular parts weld jig and its welding method | |
| CN203509324U (en) | Aluminum alloy spot-welding electrode capable of effectively preventing nugget skewing | |
| CN203509370U (en) | Spot-welding electrode welding aluminum alloy with assistance of gas | |
| CN203509326U (en) | Spot-welding electrode for welding aluminum alloy | |
| CN203509371U (en) | Spot-welding electrode for aluminum alloy | |
| CN203509325U (en) | Durable electrode special for aluminum alloy spot welding | |
| CN204430554U (en) | Ultrasonic welding machine | |
| CN103406648A (en) | Special long-service-life electrode for spot welding of aluminum alloy | |
| CN103406683A (en) | Spot-welding electrode capable of completing aluminium alloy welding with assistance of gas | |
| CN103418901A (en) | Aluminium alloy spot welding electrode capable of effectively preventing offset of molten core | |
| CN2865977Y (en) | Electric resistance spot welding electrode capable of preventing fusing pit from splashing | |
| CN112846458A (en) | Ultra-low heat input welding device and welding method for metal sheet | |
| CN104907756B (en) | Three lobe lower electrode arrangement of clamping soldering part when irregular parts weld | |
| CN102380693B (en) | Section butt welding method | |
| CN103406649A (en) | Spot-welding electrode for welding aluminium alloy | |
| CN203875470U (en) | Positioning welding electrode used for hinge support welding assembly of automobile | |
| CN103406682A (en) | Spot-welding electrode for aluminum alloy | |
| CN112404687A (en) | Slag removal device and spot welding equipment applying same | |
| CN101829839B (en) | Novel self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and slag removing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131127 |